Toyota Highlander Service Manual: Emission control system (2AZ-FE)

Emission control

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SYSTEM DIAGRAM The emission control system is determined by the ECM based on signals from various sensors. ...

More about Toyota Highlander:

On-vehicle inspection
1. INSPECT DRIVE BELT (a) Visually check the belt for excessive wear, frayed cords, etc. If any defect is found, replace the drive belt. HINT: Cracks on the rib side of a belt are considered acceptable. Replace the belt if there are any missing ribs. 2. CHECK FLUID LEVEL (a) Keep the ...